Firefox add-ons for webmasters

[sysk]

Which ones do you use?

here are some that I use:
Web Developer
FireBug
FirePHP
FlagFox
IE Tab
SEO for Firefox

is there any add-on to get quick traffic stats about a domain?

[DWB]

I've seen one that will list all sorts of data (Alexia, Google rank, whois and a lot more) about a site when it pulls up on a search engine. I don't use it, but I've seen it. I suppose it would be useful to some.

[camchoice]

Here is another one :

SEOMOZ

The seomoz plugin can be found HERE

[SPACE GLIDER]

SearchStatus

[The Duck]

That is a crazy ass avatar you got there.

[Iron Fist]

SearchStatus

I was just going to post that...

http://www.quirk.biz/searchstatus/

[Marialovesporn]

This one is nice SeoQuake

[tranza]

Mmmmm, SEO plugins are always welcome! Thanks for this guys.

[ThePornPusher]

NoScript
LiveHTTPHeaders
Download StatusBar
Extended StatusBar
Personal Menu
Tiny Menu
Smart Bookmarks Toolbar
Stop-Or-Reload Button
Tab Mix Plus
Tamper Data
Tweak Network
User Agent Switcher
Web Developer